import java.util.Stack;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 17655
 * Date: 2024-12-10
 * Time: 12:31
 */
public class test1 {
    /*
    NewCoder BM42  用两个栈实现队列
     */

    Stack<Integer> stack1 = new Stack<Integer>();
    Stack<Integer> stack2 = new Stack<Integer>();

    public void push(int node) {
        stack1.push(node);
    }

    public int pop() {
        if(stack2.isEmpty()){
            while(!stack1.isEmpty()){
                stack2.push(stack1.pop());
            }
        }
        return stack2.pop();
    }
}
